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Structure and ion dynamics in imidazolium-based protic organic ionic plastic crystals

journal contribution
posted on 01.01.2018, 00:00 authored by Haijin Zhu, Xiaoen WangXiaoen Wang, R Vijayaraghava, Yundong Zhou, Douglas R MacFarlane, Maria ForsythMaria Forsyth
A fundamental understanding of the structure and dynamics of organic ionic plastic crystal (OIPC) materials allows for a more rational design of molecular chemistry toward improved mechanical and electrochemical performances. This Letter investigates the solid-state structure and ion dynamics of two imidazolium-based protic organic ionic plastic crystals as well as the ion-transport properties in both compounds. A combination of DSC, conductivity, NMR, and synchrotron X-ray studies revealed that a subtle change in cation chemistry results in substantial differences in the thermal phase behavior, crystalline structures, as well as the ion conduction mechanisms in the protic plastic crystal compounds. Whereas most of the research nowadays has been focused on the optimization of chemistry of cations and anions, this work highlights the importance of microstructures on the ion transport rate and pathways of the OIPC materials.

History

Journal

Journal of physical chemistry letters

Volume

9

Issue

14

Pagination

3904 - 3909

Publisher

ACS Publications

Location

Washington, D.C.

eISSN

1948-7185

Language

eng

Publication classification

C1 Refereed article in a scholarly journal

Copyright notice

2018, American Chemical Society